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Pseudocapacitive polypyrrole-nanocellulose composite for sugar-air enzymatic fuel cells
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Tekniska sektionen, Institutionen för teknikvetenskaper, Nanoteknologi och funktionella material.
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2015 (engelsk)Inngår i: Electrochemistry communications, ISSN 1388-2481, E-ISSN 1873-1902, Vol. 50, s. 55-59Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Efficient, new combination of a bioelectrocatalytic and a pseudocapacitive cellulose-based composite material is reported. The anode comprising Gluconobacter sp. fructose dehydrogenase physically adsorbed on Cladophora sp. Algae nanocellulose/polypyrrole composite provides large catalytic oxidation currents due to large effective surface area of the composite material, and enables storing of the charge. Supercapacitor properties are useful for larger current demands e.g. during switching on-off the devices. Mediatorless catalytic oxidation current densities as high as 14 mA cm(-2) at potentials as negative as -0.17 V vs. Ag/AgCl constitute the best anode performance without using mediators reported to date. The fuel cell with GCE cathode covered with laccase adsorbed on naphthylated multiwalled carbon nanotubes, exhibits improved parameters: open circuit voltage of 0.76 V, and maximum power density 1.6 mW cm(-2).

sted, utgiver, år, opplag, sider
2015. Vol. 50, s. 55-59
Emneord [en]
Fructose oxidation, Biofuel cell, Laccase, Fructose dehydrogenase, Polypyrrole, Nanocellulose
HSV kategori
Forskningsprogram
Teknisk fysik med inriktning mot nanoteknologi och funktionella material
Identifikatorer
URN: urn:nbn:se:uu:diva-238287DOI: 10.1016/j.elecom.2014.11.008ISI: 000348260200014OAI: oai:DiVA.org:uu-238287DiVA, id: diva2:770753
Forskningsfinansiär
EU, FP7, Seventh Framework Programme, 607793Tilgjengelig fra: 2014-12-11 Laget: 2014-12-11 Sist oppdatert: 2017-12-05bibliografisk kontrollert

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Forlagets fullteksthttp://www.sciencedirect.com/science/article/pii/S1388248114003452

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Tammela, PetterWang, ZhaohuiNyholm, Leif

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Electrochemistry communications

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